【iOS】--调用手机相册

之前学过这个，没写博客。有点忘了，再写一次

开启权限

在info文件里开启权限

代码

//  ViewController.h
//  手机相册
//
//  Created by 王璐 on 2023/4/11.
//

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
<UIImagePickerControllerDelegate, UINavigationControllerDelegate>
@property (nonatomic, strong) UIImagePickerController* imagePicker;
@property (nonatomic, strong) UIButton* button;
@end

//  ViewController.m
//  手机相册
//
//  Created by 王璐 on 2023/4/11.
//

#import "ViewController.h"
#import "AVFoundation/AVFoundation.h"
#import "AssetsLibrary/AssetsLibrary.h"


@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    
    
    [super viewDidLoad];
    
    
    
    self.button = [UIButton buttonWithType:UIButtonTypeClose];
    [self.button setImage:[UIImage imageNamed:@"touxiang.png"] forState:UIControlStateNormal];
    self.button.frame = CGRectMake(100, 100, 100, 100);
    [self.view addSubview:self.button];
    [self.button addTarget:self action:@selector(press) forControlEvents:UIControlEventTouchUpInside];
    
    
    self.imagePicker = [[UIImagePickerController alloc] init];
    self.imagePicker.editing = YES;
    self.imagePicker.delegate = self;
    self.imagePicker.allowsEditing = YES;
    self.imagePicker.modalPresentationStyle = UIModalPresentationFullScreen;
    // Do any additional setup after loading the view.
}
- (void)press {
    
    
    UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"请选择照片来源" message:@"" preferredStyle:UIAlertControllerStyleAlert];

    UIAlertAction *camera = [UIAlertAction actionWithTitle:@"相机" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
    
    
        self.imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
        self.imagePicker.cameraCaptureMode = UIImagePickerControllerCameraCaptureModePhoto;
        [self presentViewController:self.imagePicker animated:YES completion:nil];
    }];

    UIAlertAction *photo = [UIAlertAction actionWithTitle:@"相册" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
    
    
        self.imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
        [self presentViewController:self.imagePicker animated:YES completion:nil];
    }];

    UIAlertAction * cancel = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
    
    
        [self dismissViewControllerAnimated:YES completion:nil];
    }];
    [alert addAction:camera];
    [alert addAction:photo];
    [alert addAction:cancel];
    [self presentViewController:alert animated:YES completion:nil];
    
}
@end